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I just want to understand the difference between :::: and I believe both are same which let connection from outside if any processor is listening to that port.

udp        0      0     *
udp        0      0       *
udp        0      0 :::32813                    :::*
tcp        0      0 :::5080                     :::*
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migrated from Dec 5 '12 at 23:59

This question came from our site for professional and enthusiast programmers.

As you have correctly identified, an IPv4 address of is a "catch-all" listen address.

:: is the short-form of 0:0:0:0:0:0:0:0, which is the equivalent address in IPv6. The third colon separates this address from the port number.

This question has been asked on the web before1.

1. discovered via a Google search for netstat colons

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